Research on 16-year-old sexual abstainers, low risk-takers, and high risk-takers found that
a. abstaining was most common in teens with unwed mothers.
b. high-risk teens looked more mature at earlier ages than teens from the other groups.
c. low-risk teens were most likely to be involved in romantic relationships.
d. there was no relationship between behaviors exhibited between ages 9 and 12 and later sexual activity.
Question 2
A 2007 study of college students found that about _____ agreed that they had sex when they engaged in oral-genital stimulation.
a. 20
b. 40
c. 80
d. 100
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The greatest bone mass is found around age 30 for both men and women, with the later decline being f
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